Alkaline cement.



PATENT OFFICE.

JOSEPH HAY AMIES, F PHILADELPHIA, PENNSYLVANIA.

ALKALINE CEMENT.

No Drawing.

To all whom it may concern:

Be it known that I, JOSEPH HAY AMIES, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Alkaline Cement, of which the following is a specification.

This invention relates to a cement which may be utilized for various purposes and has for its principal object to provide, as a new and complete composition of matter, an alkaline cement which may be manufactured at one place, sold and shipped in suitable receptacles to other places, for

mixture thereat with natural soil (common earth), as it is generally found, in contradistinction from clean sharp sand, gravel or broken stone.

A further object, of the present invention,

is to provide, as a new and complete composition of matter, a cement of dry powdery form, which may be shipped in bags or sacks, said cement being composed of Portland cement, calcium hydroxid and an alkali readily soluble in water, as caustic soda or caustic potash, so proportioned as to readily set natural soil (common soil), in any condition in which it may be found.

lVith these and other objects in view, the

3 invention consists of the improvements hereinafter described and finally claimed.

As is commonly known, sand, pebbles and broken stone each contain considerable percentages of silica, while natural soil, that is, common earth, in contradistinction thereto, contains practically little or no silica. In view of these facts, it is comparatively easy to take clean sharp sand, gravel or broken stone and mix therewith Portland cement and effect a set thereof, but on the ,''other hand, i t has l e retofore been imppst Bible eia senatural.millet;liiFZi iLaniniH ofsfjfisoil By natural soil, as set forth in the present application, is meant loam, clay, unclean sand and the like. Such soil invariably contains more or less humus material as decayed vegetation and other foreign substances. The of the present invention is calculated when mixed with natural 1 soil to neutralize the humus acid contained znrnfch foreign substances and efiiciently and permanently harden such natural soil for various utilities,

In practising the invention, I manufaci ritltliertlaad..cementam.scureaee Specification of Letters Patent.

Patented Feb. 24, 1914.

Application filed March 13, 1913. Serial No. 754,0 19.

ture, for instance, at a central plant, the cement of the invention, employing Portland cement, calcium hydroxid and an alkali readily soluble in water as caustic soda or caustic potash, all in dry powdery form 0 which ingredients for all general purposes are compounded in the following proportions, to wit: about parts Portland cement about 30 parts calcium hv I'OXl an a on 10 parts caustm otash. Salsoda or any other suitable form of soda or any desired form of potash may be used, but I have found that the most eifective and cheapest form of alkali for my purpose is what is known as soda ash. The cement thus compounded is a new compositicn of matter, is a complete product in itself and is of dry powdery form. This cement is shipped, for instance, from a central plant in suitable receptacles or containers, usually bags or sacks to various sections of the country.

The purchaser of such cement takes natural soil or sub-soil common earth 191.lQll.. .iL MW. law; .may.. er. 19 19...- an "preferably places it in any standard mixing macliine,capableofrediicing to an impalpable condition all the soft particles such as lumps Err any and loam, without crushing the gravel and pebbles, which may be associated therewith. It is necessary to reduce the loam and clay lumps to an impalpable con-l dition in order that the alkaline cement of g thinvention which is to be added to said natural soil may be intimately mixed ther' w with. The alkaline cement of the invention in proper quantities and in the same condition as received by the purchaser, is then placed in the mixing machine with the n,at ugal soil and thoroughly mixed therewithin a d ry state, a solvent as plain w r in sufiicient quantities being placed W1 1m he mixing machine to render the mixture suitable for forming the utilities desired.

The above described alkaline cement possesses considerable commercial value and mention may be here made of certain of its prominent advantages: The cement comprises a novel combination of ingredients which may be easily and cheaply manufactured as a complete article of commerce and shipped from a central plant for use by unskilled labor at the farm or other remote place where stone is scarce and costly, utilizing natural soil for mixture with said cewhich the cement of the invention may be manufactured and sold and the comparatively little or no cost attached to natural soil, make it possible to now form cementitious utilities far below the cost of utilities manufactured from cements upon the market at the present time. For instance, standard Portland cement weighs 95 pounds to the cubic foot. The ingredients I incorporate with Portland cement according to the present invention, weigh 40 pounds to the cubic foot. Besides weighing less than Portland cement, my cement is also cheaper, so that, bulk for bulk, my ingredients will cost less both in freight transit and actual cost.

\Vhat I claim is:

1. A composition of matter comprising a dry powdery cementitious mixture capable of being shipped in bags or the like composed of Portland cement, calcium hydroxid and an alkali readily soluble in water.

2. A composition of matter comprising the herein described dry powdery cementitiousmixture composed of about 60 parts Portland cement, about 30 parts calcium hydroxid and about 10 parts of an alkali readily soluble in water.

3. A composition of matter comprising a dry powdery oementitious mixture of the class described composed of Portland cement, calcium hydroxid and an alkali readily soluble in water, said ingredients being suitably proportioned to secure the set of natural soil when such soil combined with water is mixed therewith.

4. A composition of matter comprising a 1- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

